Soap"steel is the best highlander map, it requires coordination and teamwork"
Because other maps dont apparently
Steel is quite similar to Gravelpit in that it really rewards actual coordination and teamwork more than pure DM, whereas with a lot of other maps you can skirt by just by out-DMing the other team. It's a map that is godawful to play if your team can't get their shit together, but for teams who can coordinate it can be quite a bit more interesting to play than a DM-heavy map such as Viaduct. It's good to have maps in the rotation that are quite different from the rest; it helps filter out the teams that have awful teamwork but are just individually better than anyone on the enemy team and teams that might not have the strongest dm but have stronger gamesense and coordination.